Valve.



llhlllrl ROBERT CHARLES GREEN, OF WINCHESTER, ENGLAND.

VALVE.

To all whom it may concern:

Be it known that I, ROBERT CHARLES GREEN, a citizen of Great Britain,residing at l Brassey road, Winchester, in the county of Hants andKingdom of England, have invented certain new and useful Improvements inValves; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

Thisinvention relates to the type of stop cock used in connection with aline of piping for air or other fluid pressure machines or apparatus inwhich the cock controls the admission of a lubricating medium intocommingled relation with the air or other fluid as it passes to themachine or apparatus; and has for its object to effect the lubricationin an improved manner.

The invention consists in means whereby, when the cock is opened to apredetermined point, oil is permitted to flow continuously from thecontainer into the full-way or passage way of the cock connecting theline of piping, and whereby the flow of oil is arrested when the cock isturned to a predetermined point in the direction of closing it.

Further the invention comprises means for putting the surface of the oilin the container into communication with the pressure in the full-way,and comprises also the use of a screw pin within the oil container bymeans of which the outflow of oil may be regulated, and also thecombination of parts hereinafter described.

A stop-cock constructed according to a convenient form of my inventioncomprises a special oil chamber or container formed in or on the head ofthe plug of the cock, the

head having a threaded opening to receive a threaded cover or cap on thetop of said chamber, the said cover or cap having a threaded opening toreceive a threaded plug, which can be removed when desired to refill theoil chamber, a port formed as a groove in one side of the shell of thecock communicating when the cock is turned on, with a port or passageformed in the side of the oil container, provided for the passage of airto the top of the same; a port or passage formed on the opposite side ofthe plug and a corresponding port formed as agroove in the shell of thecock through which the oil from the container, having equal pressure ofair on the top and bottom, passes down Specification of Letters Patent.

Application filed. August 6, 1909.

Patented Mar. 21, 1911.

Serial No. 511,627.

grooved projections into the fullway of the cock, and from thence to themachine, in the form of spray mixed with air. A small adjustable screwpin with coned bottom end in a coned seat is provided at the entrance ofthe aforesaid small oil passage to the fullway of the cook. Theadjustment of this needle valve provides for any desired feed of oilfrom the container to the fullway of the cock through the grooveprovided in the shell of the cock, and therefore to the pipe line. Afeature of the cock is, that no oil can be fed to the fullway of thecock, and therefore through the pipe to the machine, when the fluidsupply to the machine is cut off by turning the cock, thus avoiding anycollection of oil in the pipe or in the machine.

In order that the invention may be clearly understood I will nowdescribe a convenient application of the same by reference to thedrawings herewith of which Figure 1 shows a central longitudinalsectional elevation of my improved cock, and Fig. 2 a sectional plantaken on the line A. A. in Fig. l.

The plug B of the cock is provided with a recess 0 in the head, formingan oil chamber and fitted over the recess is a screw cap D, and in thecap D, a screw plug E, adapted for removal to refill the chamber C withoil. A passage F is provided in one side of the plug head communicating,when in a given position, with a groove G in the shell H of the cock.

lVithin the oil chamber C, I provide a needle valve I coned at thebottom end, and working in a corresponding conical recess J forming aseat for said needle valve. The adjustment of the needle valve allows ofany desired flow of oil from the container G to pass through the passageK in the plug, when it is in a given position, into a groove L in theshell H of the cock, and thence into the fullway M of the cock, and intothe piping to the machine.

The action of the whole is as follows hen the cock is turned on thepassage F in the plug B communicates with the groove G in the shell H ofthe cock and through this passage and groove the air from the pi epasses to the top of the oil container 8; simultaneously the oil passageK is brought into communication with the groove L, and owing to theequal pressure of the fluid on both sides of the oil chamber, the oilsgravitating force will cause the oil to pass through the passage K andthe groove L into the fullway M of the cock, and from thence, in theform of spray mixed with air, to the ma chine. The amount of oil passedis regulated as described by the adjustment of the needle valve I in theseat J. hen the cock is partially turned off the flow of oil to themachine is cut off, as the outlet from the passage K is not thenopposite the groove L, and similarly the iiow of air to the top of theoil container is stopped by reason of the passage F not being oppositethe groove G. This will allow of the oil container being re-- filledwithout stopping the flow of air through the cock.

The projections N. N are provided and grooved for the purpose ofconducting the oil well into the fullway M. M of the cock,

when the passage K is opposite the grooves L or G.

Having thus fully described my invention, what I claim therein anddesire to secure by Letters Patent is l. The combination of a valvecasing provided with an air and an Oil port, a plug having a hollow headforming an oil reservoir, said plug being provided with portsterminating at one end in said oil reservoir, and at their other ends socooperating with said air and oil ports as to open communication betweenthe main line piping and oil reservoir, when the valve is full open, andclose communication when the valve is partly closed, a cap for said oilreservoir, said plug being also provided with a conical recess incommunication with the oil port of said plug and forming a valve seat,and an adjustable conical needle Valve cooperating with said conicalrecess, substantially as described.

2. The combination of a valve casing provided with an inlet and anoutlet and having downwardly disposed internal projections within saidinlet and outlet, said projections and easing being grooved to form anair port and an oil port respectively, a plug within said valve casinghaving a hollow head to form an oil reservoir, said plug having an oilport and an air port therein and so positioned relatively to the portsof said casing as to communicate therewith when the valve is full openand to be out of communication therewith when the valve is partlyclosed, substantially as described.

In testimony whereof I aflix my signature in the presence of twowitnesses.

ROBERT CHARLES GREEN.

\Vitnesses ARTHUR ERNEST COPELAND, LESTER FRANK BATH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

